@mixin w {
    margin: 0 auto;
    width: 996px;
}



.content {
    .banner {
        height: 220px;
        >img {
            width: 100%;
            height: 100%;
        }
    }
    .main {
        .title1 {
            padding: {
                top: 18px;
                bottom: 32px;
            }
            font-size: 14px;
        }
        .title2 {
            @include w;
            height: 45px;
            >div {
                height: 45px;
                margin-right: 5px;
            }
        }
    }
}